| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a zoom lens which offers high magnification, a wide view angle, and high performance and which is suitable for full-flat cameras.SOLUTION: A zoom lens includes, in order from the object side, a first group L1 having positive refractive power, a second group L2 having negative refractive power, a third group L3 having positive refractive power, and a succeeding lens group, where the succeeding lens group has a group L5 having positive refractive power on the most image side therein and the first group has a reflective member. The first group is stationary while the second and third groups move while zooming. The first group has a negative lens on the object side of the reflective member and two positive lenses on the image side of the reflective member, and the group on the most image side has two positive lenses and one negative lens. The zoom lens satisfies the following conditional expressions: 0.2<f1/ft<0.4...(1), (image)...(2), 0.15<fa/ft<0.4...(3).</p> |
